YAML 1.1 parser and emitter for Java

TestNG is a testing framework inspired from JUnit and NUnit but introducing some new functionalities that make it more powerful and easier to use. It supports test configured by annotations, data-driven testing, parametric tests, etc.

Spring Boot auto-configuration attempts to automatically configure your Spring application based on the jar dependencies that you have added.

Core starter, including auto-configuration support, logging and YAML

Spring Beans provides the configuration framework and basic functionality to instantiate, configure, and assemble java objects.

Support for reading and writing YAML-encoded data via Jackson abstractions.

Spring Boot makes it easy to create stand-alone, production-grade Spring based Applications that you can 'just run'. It takes an opinionated view of the Spring platform and third-party libraries so you can get started with minimum configuration.

Spark SQL is Apache Spark's module for working with structured data based on DataFrames.

JSON API documentation for spring based applications

POM was created by Sonatype Nexus

The core bundle which includes all core features of kernel Eg : (Deployment Framework, Logging Framework, Transport Framework, etc)